Graded Structures of $v$-adic Carlitz Multiple Polylogarithms and $v$-adic Multiple Zeta Values

In this paper, we study $v$-adic Carlitz multiple polylogarithms and $v$-adic multiple zeta values. We prove that, for every finite place $v$ of ${\mathbb{F}}_q(\theta )$, the natural weight gives a graded structure on the algebras generated by these values. Moreover, we show that every $\overline{{\mathbb{F}}_q(\theta )}$-linear relation among these values arises from an ${\mathbb{F}}_q(\theta )$-linear relation. In particular, our results establish a function field analogue of the Furusho-Yamashita direct sum conjecture and extend Chen’s work from finite places of degree one to arbitrary finite places.